The Buick 401 was the old "Nailhead" an interesting engien in its own rite but never found in an AMC. The only GM engines AMC ever used were the iron duke (puke) 4 cyl and the 2.8 v6 in the small jeep wagons. Both the engines were crap. And i dont say that just because im not a big chevy fan, they were just crap. jeremy Stone And no the Rambler 327 was nat a chevy engine! LOL << hey all i thought the 401 was a buick motor and some gremlins will accept a 350 just fine >>